Screening And Aspiration

These are the oldest seed cleaning processes in the world.

Screening and aspiration, whilst simple processes, still have a very important place in all our cleaning operations. It is usually the first process that the goods are passed through because it is important to present subsequent, more sophisticated machinery such as colour sorters and X-ray machines with size and gravity graded material to maximise their efficiency.

We process a wide range of seed types here and therefore have a wide range of sieves; over 200 different sets, sizes are defined in increments of 0.1mm so we are able to be very precise with our sieving operations. Seeds are a natural product and therefore will vary in size due to a wide range of climatic and regional factors, we therefore only specify the sieves used for a given process run after carrying out extensive tests on a sample from the batch involved using laboratory test sieves. The use of different shaped perforations on the sieves allows us to take advantage of the shape of the seed type that we are processing to be more effective in removing foreign material.

Some of the more common products that we process for screening and aspiration include:

  • Adzuki Beans
  • Alubia Beans
  • Amaranth
  • Baby Green Lima Beans
  • Baby White Lima Beans
  • Beluga Lentils
  • Black Barley
  • Black Kidney Beans
  • Black Lentils
  • Black Quinoa
  • Black Rice
  • Black Turtle Beans
  • Blackeye Beans
  • Borlotti Beans
  • Brown Beans
  • Brown Linseed
  • Brown Rice
  • Buckwheat
  • Bulgur Wheat
  • Butter Beans
  • Channa Dall
  • Chia Seed
  • Chick Peas
  • Coriander
  • Cracked Freekeh Wheat
  • Cranberry Beans
  • Cumin Seed
  • Dark Red Kidney Beans
  • Dark Speckled Green Lentils
  • Desi Chickpeas
  • Flageolet Beans
  • Freekeh Wheat
  • Golden Linseed
  • Great Northern Beans
  • Green Lentils
  • Gunga Peas
  • GWS Pumpkinseed
  • Hemp Seed
  • Large Lima Beans
  • Maize
  • Maple Peas
  • Marrowfat Peas
  • Millet
  • Mung Beans
  • Mung Dal
  • Peabeans
  • Pearl Barley
  • Pearled Spelt
  • Pinto Beans
  • Popcorn
  • Poppy Seed
  • Pumpkinseed
  • Red Quinoa
  • Red Rice
  • Red Split Lentils
  • Rosecocoa Beans
  • Rye Berries
  • Sorghum Seed
  • Spelt Wheat
  • Sunflower Seed
  • Toor Dall
  • Urid Beans
  • Urid Dall
  • Wheat Berries
  • White Quinoa
  • White Rice
  • White Maize
  • Whole Brown Lentils
  • Yellow Split Peas

To view the full range of processing services that we offer, click here.

If you would like further details on our screening and aspiration process, or to discuss your processing requirements then please do get in touch on 01223 834100 or hello@granta.uk.com.

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